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Logic analyser only works when running fast! SPI, 18F46K20, Oshonsoft.

camerart

Active Member
Thread starter #1
Hi,
I have a program on an 18F46K20 and trying to get SPI working.

I have a Logic analyser connected between a PIC and a compass module controlled by SPI.

I've tried various things: by altering the PIC timing, and changing the SSPCON1 settings. It's running with an oscillator speed of 8MHz x4.

When using Oshonsoft simulator I use the line:
Define SIMULATION_WAITMS_VALUE = 1 'Comment in for SIM out for PIC
I can get a reading on the analyser, only if I comment in this line, making the PIC run 1000x too fast.

Any ideas please?
Camerart.
 

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